1/* 2 * 3 * Copyright (c) 2003 Gerd Knorr 4 * Copyright (c) 2003 Pavel Machek 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#include <linux/module.h> 22#include <linux/moduleparam.h> 23#include <linux/init.h> 24#include <linux/delay.h> 25#include <linux/interrupt.h> 26#include <linux/input.h> 27 28#include "bttv.h" 29#include "bttvp.h" 30 31 32static int debug; 33module_param(debug, int, 0644); /* debug level (0,1,2) */ 34static int repeat_delay = 500; 35module_param(repeat_delay, int, 0644); 36static int repeat_period = 33; 37module_param(repeat_period, int, 0644); 38 39static int ir_rc5_remote_gap = 885; 40module_param(ir_rc5_remote_gap, int, 0644); 41static int ir_rc5_key_timeout = 200; 42module_param(ir_rc5_key_timeout, int, 0644); 43 44#define DEVNAME "bttv-input" 45 46/* ---------------------------------------------------------------------- */ 47 48static void ir_handle_key(struct bttv *btv) 49{ 50 struct card_ir *ir = btv->remote; 51 u32 gpio,data; 52 53 /* read gpio value */ 54 gpio = bttv_gpio_read(&btv->c); 55 if (ir->polling) { 56 if (ir->last_gpio == gpio) 57 return; 58 ir->last_gpio = gpio; 59 } 60 61 /* extract data */ 62 data = ir_extract_bits(gpio, ir->mask_keycode); 63 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n", 64 gpio, data, 65 ir->polling ? "poll" : "irq", 66 (gpio & ir->mask_keydown) ? " down" : "", 67 (gpio & ir->mask_keyup) ? " up" : ""); 68 69 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) || 70 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) { 71 ir_input_keydown(ir->dev,&ir->ir,data,data); 72 } else { 73 ir_input_nokey(ir->dev,&ir->ir); 74 } 75 76} 77 78void bttv_input_irq(struct bttv *btv) 79{ 80 struct card_ir *ir = btv->remote; 81 82 if (!ir->polling) 83 ir_handle_key(btv); 84} 85 86static void bttv_input_timer(unsigned long data) 87{ 88 struct bttv *btv = (struct bttv*)data; 89 struct card_ir *ir = btv->remote; 90 91 ir_handle_key(btv); 92 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling)); 93} 94 95/* ---------------------------------------------------------------*/ 96 97static int bttv_rc5_irq(struct bttv *btv) 98{ 99 struct card_ir *ir = btv->remote; 100 struct timeval tv; 101 u32 gpio; 102 u32 gap; 103 unsigned long current_jiffies; 104 105 /* read gpio port */ 106 gpio = bttv_gpio_read(&btv->c); 107 108 /* remote IRQ? */ 109 if (!(gpio & 0x20)) 110 return 0; 111 112 /* get time of bit */ 113 current_jiffies = jiffies; 114 do_gettimeofday(&tv); 115 116 /* avoid overflow with gap >1s */ 117 if (tv.tv_sec - ir->base_time.tv_sec > 1) { 118 gap = 200000; 119 } else { 120 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) + 121 tv.tv_usec - ir->base_time.tv_usec; 122 } 123 124 /* active code => add bit */ 125 if (ir->active) { 126 /* only if in the code (otherwise spurious IRQ or timer 127 late) */ 128 if (ir->last_bit < 28) { 129 ir->last_bit = (gap - ir_rc5_remote_gap / 2) / 130 ir_rc5_remote_gap; 131 ir->code |= 1 << ir->last_bit; 132 } 133 /* starting new code */ 134 } else { 135 ir->active = 1; 136 ir->code = 0; 137 ir->base_time = tv; 138 ir->last_bit = 0; 139 140 mod_timer(&ir->timer_end, 141 current_jiffies + msecs_to_jiffies(30)); 142 } 143 144 /* toggle GPIO pin 4 to reset the irq */ 145 bttv_gpio_write(&btv->c, gpio & ~(1 << 4)); 146 bttv_gpio_write(&btv->c, gpio | (1 << 4)); 147 return 1; 148} 149 150/* ---------------------------------------------------------------------- */ 151 152static void bttv_ir_start(struct bttv *btv, struct card_ir *ir) 153{ 154 if (ir->polling) { 155 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv); 156 ir->timer.expires = jiffies + HZ; 157 add_timer(&ir->timer); 158 } else if (ir->rc5_gpio) { 159 /* set timer_end for code completion */ 160 init_timer(&ir->timer_end); 161 ir->timer_end.function = ir_rc5_timer_end; 162 ir->timer_end.data = (unsigned long)ir; 163 164 init_timer(&ir->timer_keyup); 165 ir->timer_keyup.function = ir_rc5_timer_keyup; 166 ir->timer_keyup.data = (unsigned long)ir; 167 ir->shift_by = 1; 168 ir->start = 3; 169 ir->addr = 0x0; 170 ir->rc5_key_timeout = ir_rc5_key_timeout; 171 ir->rc5_remote_gap = ir_rc5_remote_gap; 172 } 173} 174 175static void bttv_ir_stop(struct bttv *btv) 176{ 177 if (btv->remote->polling) { 178 del_timer_sync(&btv->remote->timer); 179 flush_scheduled_work(); 180 } 181 182 if (btv->remote->rc5_gpio) { 183 u32 gpio; 184 185 del_timer_sync(&btv->remote->timer_end); 186 flush_scheduled_work(); 187 188 gpio = bttv_gpio_read(&btv->c); 189 bttv_gpio_write(&btv->c, gpio & ~(1 << 4)); 190 } 191} 192 193int bttv_input_init(struct bttv *btv) 194{ 195 struct card_ir *ir; 196 IR_KEYTAB_TYPE *ir_codes = NULL; 197 struct input_dev *input_dev; 198 int ir_type = IR_TYPE_OTHER; 199 int err = -ENOMEM; 200 201 if (!btv->has_remote) 202 return -ENODEV; 203 204 ir = kzalloc(sizeof(*ir),GFP_KERNEL); 205 input_dev = input_allocate_device(); 206 if (!ir || !input_dev) 207 goto err_out_free; 208 209 /* detect & configure */ 210 switch (btv->c.type) { 211 case BTTV_BOARD_AVERMEDIA: 212 case BTTV_BOARD_AVPHONE98: 213 case BTTV_BOARD_AVERMEDIA98: 214 ir_codes = ir_codes_avermedia; 215 ir->mask_keycode = 0xf88000; 216 ir->mask_keydown = 0x010000; 217 ir->polling = 50; // ms 218 break; 219 220 case BTTV_BOARD_AVDVBT_761: 221 case BTTV_BOARD_AVDVBT_771: 222 ir_codes = ir_codes_avermedia_dvbt; 223 ir->mask_keycode = 0x0f00c0; 224 ir->mask_keydown = 0x000020; 225 ir->polling = 50; // ms 226 break; 227 228 case BTTV_BOARD_PXELVWPLTVPAK: 229 ir_codes = ir_codes_pixelview; 230 ir->mask_keycode = 0x003e00; 231 ir->mask_keyup = 0x010000; 232 ir->polling = 50; // ms 233 break; 234 case BTTV_BOARD_PV_M4900: 235 case BTTV_BOARD_PV_BT878P_9B: 236 case BTTV_BOARD_PV_BT878P_PLUS: 237 ir_codes = ir_codes_pixelview; 238 ir->mask_keycode = 0x001f00; 239 ir->mask_keyup = 0x008000; 240 ir->polling = 50; // ms 241 break; 242 243 case BTTV_BOARD_WINFAST2000: 244 ir_codes = ir_codes_winfast; 245 ir->mask_keycode = 0x1f8; 246 break; 247 case BTTV_BOARD_MAGICTVIEW061: 248 case BTTV_BOARD_MAGICTVIEW063: 249 ir_codes = ir_codes_winfast; 250 ir->mask_keycode = 0x0008e000; 251 ir->mask_keydown = 0x00200000; 252 break; 253 case BTTV_BOARD_APAC_VIEWCOMP: 254 ir_codes = ir_codes_apac_viewcomp; 255 ir->mask_keycode = 0x001f00; 256 ir->mask_keyup = 0x008000; 257 ir->polling = 50; // ms 258 break; 259 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2: 260 case BTTV_BOARD_CONTVFMI: 261 ir_codes = ir_codes_pixelview; 262 ir->mask_keycode = 0x001F00; 263 ir->mask_keyup = 0x006000; 264 ir->polling = 50; // ms 265 break; 266 case BTTV_BOARD_NEBULA_DIGITV: 267 ir_codes = ir_codes_nebula; 268 btv->custom_irq = bttv_rc5_irq; 269 ir->rc5_gpio = 1; 270 break; 271 case BTTV_BOARD_MACHTV_MAGICTV: 272 ir_codes = ir_codes_apac_viewcomp; 273 ir->mask_keycode = 0x001F00; 274 ir->mask_keyup = 0x004000; 275 ir->polling = 50; /* ms */ 276 break; 277 } 278 if (NULL == ir_codes) { 279 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type); 280 err = -ENODEV; 281 goto err_out_free; 282 } 283 284 if (ir->rc5_gpio) { 285 u32 gpio; 286 /* enable remote irq */ 287 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4); 288 gpio = bttv_gpio_read(&btv->c); 289 bttv_gpio_write(&btv->c, gpio & ~(1 << 4)); 290 bttv_gpio_write(&btv->c, gpio | (1 << 4)); 291 } else { 292 /* init hardware-specific stuff */ 293 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0); 294 } 295 296 /* init input device */ 297 ir->dev = input_dev; 298 299 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)", 300 btv->c.type); 301 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", 302 pci_name(btv->c.pci)); 303 304 ir_input_init(input_dev, &ir->ir, ir_type, ir_codes); 305 input_dev->name = ir->name; 306 input_dev->phys = ir->phys; 307 input_dev->id.bustype = BUS_PCI; 308 input_dev->id.version = 1; 309 if (btv->c.pci->subsystem_vendor) { 310 input_dev->id.vendor = btv->c.pci->subsystem_vendor; 311 input_dev->id.product = btv->c.pci->subsystem_device; 312 } else { 313 input_dev->id.vendor = btv->c.pci->vendor; 314 input_dev->id.product = btv->c.pci->device; 315 } 316 input_dev->cdev.dev = &btv->c.pci->dev; 317 318 btv->remote = ir; 319 bttv_ir_start(btv, ir); 320 321 /* all done */ 322 err = input_register_device(btv->remote->dev); 323 if (err) 324 goto err_out_stop; 325 326 /* the remote isn't as bouncy as a keyboard */ 327 ir->dev->rep[REP_DELAY] = repeat_delay; 328 ir->dev->rep[REP_PERIOD] = repeat_period; 329 330 return 0; 331 332 err_out_stop: 333 bttv_ir_stop(btv); 334 btv->remote = NULL; 335 err_out_free: 336 input_free_device(input_dev); 337 kfree(ir); 338 return err; 339} 340 341void bttv_input_fini(struct bttv *btv) 342{ 343 if (btv->remote == NULL) 344 return; 345 346 bttv_ir_stop(btv); 347 input_unregister_device(btv->remote->dev); 348 kfree(btv->remote); 349 btv->remote = NULL; 350} 351 352 353/* 354 * Local variables: 355 * c-basic-offset: 8 356 * End: 357 */ 358